主权项 |
1. A seal assembly comprising:
an annular metal seat shield having an inner cylindrical wall, an outer cylindrical wall and an annular back wall, the annular metal seat shield further including an annular recess defined by the inner cylindrical wall, outer cylindrical wall and the annular back wall, the inner cylindrical wall having a forward surface and the outer cylindrical wall having a forward surface; an annular elastomeric seal having a sealing surface; and a metal bonding ring bonded to and encapsulated by the annular elastomeric seal, the metal bonding ring and annular elastomeric seal being contained in the annular recess of the annular metal seat shield with the sealing surface of the elastomeric seal extending past the forward surfaces of the inner and outer cylindrical walls, the metal bonding ring secured to the annular back wall of the annular metal seat shield. |